Sound-reproducing machine.



L. J. GERSO'N.

SOUND REPBODUCING MACHINE. APPLIUATIOI 'LnD Nov. 20, 1906.

Patented June 28, 1910.

Q/vmmm I p To all whom it may comm:

* i employed in connection with a disk having a; 'di.

'STATES PATENT OFFICE..

1 .L`0UIS- JAY'GERSON, 0F PHILADLPHIA, PENNSYLVANIA'.

VsioUNn-itErItODU'cIver- MACHINE Specifieation of Letters Patent. Patented June 28,` 1910.

Application filed November 20, 190 8. Serial No. 463,718.

't known that I, Louis JAY Gnnsoiv, fa citizen 'of' the United States, and a resifde'nt of the city and county of Philadelphia,

p Stateof Pennsylvania, have invented an Improvement in Sou'nd-Reproducing Machines, of which the following is a specification;

invention has reference to sound reproducing' machines andconsists of certain improvements which are fully set forth in the following specifications and shown in' the accompanying drawings which form a part thereto.

j; I'npman-y types of sound reproducng ma- Vchines in which *a floating reproducer is weight of said parts'and each of them, may p be vcounterbalanced to the extent desired to v1jejluce`thfe pressure and consequent wear thelife ofthe record is increased and much of the scratchingsounds at present reproduced 'are largely eliminated.

*l invention consists ofthe tubular arm, II suchjas employed in disk talking machines,

rovided at itsI free end with' a sound box avingfcapacity forv vertical movement-or f'iadjustment', combinedV with a counterbal- 'a'cing device' carried by the tubular arm nd`iv'countei'balancingV the weight of the ound' box,r whereby the pressure of the "y'lusv'upon lthe'iirecord disk of the machine Qmy'beVariedQ''" i v-y Even i on ff'urther consists lin pros. omepf the-weight ofthe; sound-tex; i

construction jw'hich, together with the'` 'feaupon the record disk, with the result that' prevent rat-thng,

ended? forward 'support the sound Y and'fthe fi otht-Srjl extending, ;'rearward and 't provided Vwithj rmeans, 'for counterbalancing stood by reference to the drawings, in which:

Figure 1, is aiplan view of a tubula-r arm and sound box of a talking machine havingmy improvements applied thereto; Fig. 2, is a side televat-ion of the counterbalancing devices embodying my improvements and with the tubular arm, sound box and record disk indicated in'dotted lines; and Fig. '3,

is a similar. view to that shown Sin Fig. 2,- illustrating modification of cn yinventiom A is a tubular arm, such as employed in a disk talking machine in commercialuse, and is usually supported so as to swing laterally over the record S. Theen'd of this tubular arm A is provided with a trausverse tubular bearing B. Journaled in this bearing is a goose neck'formed ofthe tubular part C and carrying' 'at' its free end the sound box or reproducerD, having a stylus,v or needle which vtracks the groove in the record S. This' lconstruction is such that the bearing' B remains normally at a fixed distance above the record S, whereas the sound box is free to swing vertically as desired, being held and guided by the goose neck C whichus journaled in the part B 'of the arm My invention is've'ry easilyadapted to this character ,of sound. sbox suporting arm v 85.

and as shown, it oomprise's e. following -counterbalancing devices; ,A' collaa' "E Iifits'-- over one of the' lateral ends of tubular bearing B, and has -flanges F throuH 'h which the clamping screw G extends, and yfiwhich `thecollar Eis rigidly clampedfin'fixed position upon the part 'B of the said larni A. The upeperA patof'flis' .collar is provided with a fiange H carrying a pivot 'pinJ upon 4which is pivoted :the-.eov terbalancing'lever I. The forwandend K of'thislever I is vextended downwardf-andund'er thev hub ori tion, at the back ofthe soundbox D, an to said end K maybe covered with; apiece o rubber tubing L tok form. a

cushion structure; The-colla-;E is alsoproevided with a: rearwardl -'extendngbracket' v M to which a counterba aucingfisping N is secured.: v The other end of the spring v11s at-- :ta'ched toran .adjusting *scre w 0- which i extends uward, through the level:1 il,v ;and is provide with a nut P.- By turning the nut extent, the weight ojthe sound box D,and

Vas

lever l may be bent laterally as at R so as to strike the upper part of the armv A and act fs a stop Whenever the sound box is turned upward or backward, as for instance, When applying a. new needle or stylus point.

By having the collar .E adjustably clampcd upon the bearing B, it is evident that the counterbalancing' device as a Whole r may be adjusted in any suitable position to' suit the requirements of the apparatus.

When the collar E is properly clamped by the screw G, it becomes rigidly attached to the part B of the arm A, but with capacity for proper adjustment of the counterbalaneing attachment. I am enabled to reduce the friction ybetween the stylus point and the groove'of the record disk S to a minimum and with a proper co-action for reproducing sound and feeding the sound box. By attaching' the counterhalancing device to the part B, allstrain upon the journal bearing` of the goose neck C is removed, and consequently the counterbalancing device is sensitive and does not interpose objectionable strains.

My invention may be employed in connection with various types, of disk record sound reprod-ucing machines and yet in all cases there will be a hinged arm or element carrying the sound box wherelc-y it may be raised or lowered with respect to the sound record disk, combined with a ounterbalancing means independent of said arm or elelmerit and, sound box vfor counterbalancing them and yet permitting them to be raised independent of the counterbalaneng devices. lt Will be observed that, in the general construetions shown, the arin structure supporting the sound box may be considered as composed. of tWo tubular parts, one having a relatively fixed distance from the record disk, and the other pvoted to said part in such manner as to enable the sound box to be raised and lowered 'with respect to-the disk, combined with a counterbalancing device having a connection with that portion 'of the tubuiar support Which is maintained at the relatively fixed elevation from the record disk and adapted to co'unterbalance the sound box While, permitting it to be freely raised, preferably independently of the eounterbalancing device, when so desired.

A I have shown the construction of my invention in the form Which is excellently adapted for commercial use, but do not limit myself to the details as may be modified Without departingr from. the spirit of the inventionu Having new described my invention, What I claim as new and desire to secure by Letters Patent, is:

1. ln a sound reproducing machine, the combination of tulmlar arm, a sound box, a hinged tubular on end of the tubular arm to supportthe sound box u'hereby it may be raised or lowered, and counter- 2. ln sound reprodueing machine, the

combination of a tubular arm, a sound box,-

a hinged tubular part to support the sound box hinged to the tubular part Whereby it inay be raised or lowered, and an independent countirbalancing der/ice for counterbalancing the sound box and free end of the hinged tubular part and from. Which the said parts are vertically adjustable, said counterbalancing device consisting of a level' pivoted axially 'w ith the hinge of the tubular part and having one end arranged for supporting the soundv box and tubular part, and a counterbalancing means operating upon the other end of the lever.

a sound reproducing machine, the combination of a tubular arm having a transverse tnbular end, a tubular goose neck hinged to the tubular end of the tubular arm, a sound box secured to the free end of the tubular goose neck, and counterbalancing devices carried by the tubular arm and operating to support the sound box and vgoose neck against the action of gravity consisting of a coun'terbalancing lever adjustably hinged to the transverse tubular end of the tubular arm and having a connection With the sound box and goose neck the construction being such that it is adjustable circumferentially about the axis of the hinge of the goose neck,

a. In a sound reproducing machine, the combination of a tubular arm, a tubular goose neclr hinged to the end of the tubular arm on a 'transverse axis, a sound box secured to the free end of the tubular goose neck, a counterbalancing lever hinged in substantial vertical alinement with the axis of the hinga of the goose neck and operating to support the sound box and goose neck against `the action of graviti, a collar clamped to the tubuar arm so las to be adjusted cireun'ferentially about the axis 'of the hinga of the `gfoose neck and supporting the ceunterbalancirg lover, and means act-- ing upon the other cnd of the lover for counter-acting the Weight of the sound bei: and goose neck the construction being such tl'iat the bingo of the lover, the count'erbalance means and the contact with the goose neck are all in the same plane. i

5. ln a sound reproducing machine, the combination of a disk, a tubular sound conveying parthaving` a, relatively fixed distance above the disk, a. second tubular sound oonveying part hinged to the' first mentioned tubular art, a sound box secured to the free lend of t e second tubular part, and a counterbalancin device carried by the first mentioned tub ar sound conveying part and act- 'mg' to counterbalance the weight of the second tubular part and its sound box con-' sis'ting of a lever hinged in `vertical alinement with the hinge joint of the second tu- 10 bular part and having one end arranged to support the sound box and said second tubulvarypart, and counterbalancing means consisting of a spring and devices to adjust its tension carried on the first mentioned tubular part tooperate the lever.

' v ,6. In a sound reproducing machine, the

combination of a disk, a tubular sound con- `veying part having a relatively fixed distance above the disk and having a transverse tubular end, a second tubular sound `conveypart hinged to the first mentioned tub ar part on its transverse tubular end, a

verse tubular end of sound conveyer part.

and having a bracket, a counterbalancing lever hinged to the collar in vertical alinement with` e'axis of the hinged tubula'- part, azpri g connecting the'lever with the bracketand means .for adjusting the tension of thes'pring. j

Iiij'testimony ofqgwhich invention, I have her'eunto set my 'hand.

Louis JAY GERsoN.

Witnesses:

R. M. HUNTER, AUGUST W. f Rrrro. 

